Depends on how heavy you'll tow, and how far you turn the screw in. Definitely don't do it without gauges.

 

Hey bud. Whats the deal with the block being heavier? Specs.

 

I'm looking I'm looking ... I recall a TDR / Mysteryman post about this. I don't believe he listed physical specs. Bgilbert might concur as well. The extra beef was in the skirt area I believe. The early engines were basically off the shelf industrial blocks as the later ones catered to the application more.

 

I always thought it was weird that my dad's 91 nonIC starts quicker than my 93 IC, mine doesn't start 'slow' but lights on the 2nd crank instead of as soon as you touch the key.

I've always been told the IC head is a lot better than the nonIC. The IC trucks have a much better radiator. I've never heard about the pistons/cam being better, what's the difference there?

 

Thicker main webs, I'm guessing.

 

This makes some sense now because I saw the video of "bumping the timing" and moving the pump 1/8" toward the block. I remember that when I installed the new IP, the instructions were to turn the pump AS FAR AS IT WOULD GO toward the block. Sure runs good...Mark

 

Besides the head cracking issue I perfer the non-ic engines

 

so am i gonna have head issues if i go non i/c. at what point will there be issues?

 

The non I/C heads have a 9mm injector bore. I/C heads were 7mm. The 9's will crack from the bore to the valve seats more so than the 7mm head. High EGT's are the killer of any head.

 

i missed out on the vids in crossys origional post, and now youtube wont let me view them..are they posted up somewhere else?? i would really like to see them and the link in the sticky wont play them either?

 

Sticky link has been updated.

 

The pistons are regular industrial piston and the camshaft is the same as the marine cam.

 

does the Non I/C cam have longer lift or higher lift of the valves? Or are they so minute that no one really notices?

Bigger injectors make pump mods more noticable for less buck. 3spd with 3.07 gears make a good drag set up, but you're toped out at 83mph or so without a 3200rpm spring or high idle bump on the pump.

Injector lines I don't THINK are bigger, just routed different is all. I'm sure someone will correct me if they are bigger, but they definately take a different route from the IP to the Injectors.

 

i can make 95+ mph in mine with the stock g spring???

 

The non i/c injection lines are a slightly larger diameter and they are routed differently and they only bolt up to the non i/c delivery valves IIRC.

Intercooled injection line 1.6mm, Non intercooled injection line 1.8mm. Thats .0079 inch difference, not much...